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Radeon HD 7790 vs Radeon RX 560

Intro

The Radeon HD 7790 has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare those specifications to the Radeon RX 560, which features a clock frequency of 1175 MHz and a GDDR5 memory speed of 7000 MHz. It also uses a 128-bit memory bus, and makes use of a 14 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560 80 Watts
Radeon HD 7790 85 Watts
Difference: 5 Watts (6%)

Memory Bandwidth

In theory, the Radeon RX 560 should be a small bit faster than the Radeon HD 7790 in general. (explain)

Radeon RX 560 114688 MB/sec
Radeon HD 7790 96000 MB/sec
Difference: 18688 (19%)

Texel Rate

The Radeon RX 560 is a lot (more or less 34%) more effective at texture filtering than the Radeon HD 7790. (explain)

Radeon RX 560 75200 Mtexels/sec
Radeon HD 7790 56000 Mtexels/sec
Difference: 19200 (34%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 560 is a better choice, not by a very large margin though. (explain)

Radeon RX 560 18800 Mpixels/sec
Radeon HD 7790 16000 Mpixels/sec
Difference: 2800 (18%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon HD 7790

Amazon.com

Check prices at:

Radeon RX 560

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 7790 Radeon RX 560
Manufacturer AMD AMD
Year March 2013 May 2017
Code Name Bonaire XT Baffin
Memory 1024 MB 4096 MB
Core Speed 1000 MHz 1175 MHz
Memory Speed 6000 MHz 28000 MHz
Power (Max TDP) 85 watts 80 watts
Bandwidth 96000 MB/sec 114688 MB/sec
Texel Rate 56000 Mtexels/sec 75200 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 18800 Mpixels/sec
Unified Shaders 896 1024
Texture Mapping Units 56 64
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 14 nm
Transistors 2080 million 3000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 7790

Amazon.com

Check prices at:

Radeon RX 560

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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